eSecurity Planet 
A resource for daily information on e-security targeted to IT managers. The site provides users with information from a variety of sources, including experts at security product and services firms, and the consultants who follow the security industry.
ISP-Planet
Founded in April, 1999 by Ted Stevenson as part of internet.com's xSP Channel, ISP-Planet was designed from the start to address the concerns of Internet Service Providers. ISP-Planet covers the main areas of interest for Internet Service Providers such as equipment, perspectives, Fixed wireless, industry news & trends, market research, news, and more.
m0n0wall, an Open Source Lightweight Firewall
Manuel Kasper's embedded FreeBSD-based firewall software package is especially attractive to WISPs and small ISPs.
Webopedia's Quick Reference Section
Use this Webopedia reference section for information on common Internet and computer facts and occurrences.